10831 has 2 divisors, whose sum is σ = 10832. Its totient is φ = 10830.
The previous prime is 10799. The next prime is 10837. The reversal of 10831 is 13801.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 10831 - 25 = 10799 is a prime.
It is a super-2 number, since 2×108312 = 234621122, which contains 22 as substring.
It is an Ulam number.
It is a nialpdrome in base 15.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (10837) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5415 + 5416.
It is an arithmetic number, because the mean of its divisors is an integer number (5416).
210831 is an apocalyptic number.
10831 is a deficient number, since it is larger than the sum of its proper divisors (1).
10831 is an equidigital number, since it uses as much as digits as its factorization.
10831 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 24, while the sum is 13.
The square root of 10831 is about 104.0720903989. The cubic root of 10831 is about 22.1253178585.
It can be divided in two parts, 10 and 831, that added together give a square (841 = 292).
The spelling of 10831 in words is "ten thousand, eight hundred thirty-one".
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